Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 1507:cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
Summary: split MethodHandle.invoke into invokeExact and invokeGeneric; also clean up JVM-to-Java interfaces
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 01 May 2010 02:42:18 -0700 |
| parents | 4ce7240d622c |
| children | 2ffde6cfe049 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 710 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_linkResolver.cpp.incl" | |
| 27 | |
| 28 //------------------------------------------------------------------------------------------------------------------------ | |
| 29 // Implementation of FieldAccessInfo | |
| 30 | |
| 31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, | |
| 32 BasicType field_type, AccessFlags access_flags) { | |
| 33 _klass = klass; | |
| 34 _name = name; | |
| 35 _field_index = field_index; | |
| 36 _field_offset = field_offset; | |
| 37 _field_type = field_type; | |
| 38 _access_flags = access_flags; | |
| 39 } | |
| 40 | |
| 41 | |
| 42 //------------------------------------------------------------------------------------------------------------------------ | |
| 43 // Implementation of CallInfo | |
| 44 | |
| 45 | |
| 46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
| 47 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
| 48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
| 53 // This is only called for interface methods. If the resolved_method | |
| 54 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
| 55 // we should pick the vtable index from the resolved method. | |
| 56 // Other than that case, there is no valid vtable index to specify. | |
| 57 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 1142 | 58 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
| 0 | 59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
| 60 vtable_index = resolved_method->vtable_index(); | |
| 61 } | |
| 62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 63 } | |
| 64 | |
| 65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
| 66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
| 67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 68 } | |
| 69 | |
| 70 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
| 71 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
| 72 _resolved_klass = resolved_klass; | |
| 73 _selected_klass = selected_klass; | |
| 74 _resolved_method = resolved_method; | |
| 75 _selected_method = selected_method; | |
| 76 _vtable_index = vtable_index; | |
| 77 if (CompilationPolicy::mustBeCompiled(selected_method)) { | |
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78 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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79 |
| 0 | 80 // Note: with several active threads, the mustBeCompiled may be true |
| 81 // while canBeCompiled is false; remove assert | |
| 82 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile"); | |
| 83 if (THREAD->is_Compiler_thread()) { | |
| 84 // don't force compilation, resolve was on behalf of compiler | |
| 85 return; | |
| 86 } | |
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87 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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88 // 'is_not_initialized' means not only '!is_initialized', but also that |
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89 // initialization has not been started yet ('!being_initialized') |
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90 // Do not force compilation of methods in uninitialized classes. |
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91 // Note that doing this would throw an assert later, |
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92 // in CompileBroker::compile_method. |
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93 // We sometimes use the link resolver to do reflective lookups |
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94 // even before classes are initialized. |
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95 return; |
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96 } |
| 0 | 97 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
| 98 methodHandle(), 0, "mustBeCompiled", CHECK); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 | |
| 103 //------------------------------------------------------------------------------------------------------------------------ | |
| 104 // Klass resolution | |
| 105 | |
| 106 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
| 107 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
| 108 sel_klass->as_klassOop(), | |
| 109 true)) { | |
| 110 ResourceMark rm(THREAD); | |
| 111 Exceptions::fthrow( | |
| 112 THREAD_AND_LOCATION, | |
| 113 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 114 "tried to access class %s from class %s", | |
| 115 sel_klass->external_name(), | |
| 116 ref_klass->external_name() | |
| 117 ); | |
| 118 return; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 123 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
| 124 result = KlassHandle(THREAD, result_oop); | |
| 125 } | |
| 126 | |
| 127 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 128 klassOop result_oop = | |
| 129 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
| 130 result = KlassHandle(THREAD, result_oop); | |
| 131 } | |
| 132 | |
| 133 | |
| 134 //------------------------------------------------------------------------------------------------------------------------ | |
| 135 // Method resolution | |
| 136 // | |
| 137 // According to JVM spec. $5.4.3c & $5.4.3d | |
| 138 | |
| 139 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 140 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
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141 if (EnableMethodHandles && result_oop != NULL) { |
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142 switch (result_oop->intrinsic_id()) { |
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143 case vmIntrinsics::_invokeExact: |
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144 case vmIntrinsics::_invokeGeneric: |
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145 case vmIntrinsics::_invokeDynamic: |
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146 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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147 return; |
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148 } |
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149 } |
| 0 | 150 result = methodHandle(THREAD, result_oop); |
| 151 } | |
| 152 | |
| 153 // returns first instance method | |
| 154 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 155 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
| 156 result = methodHandle(THREAD, result_oop); | |
| 157 while (!result.is_null() && result->is_static()) { | |
| 158 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
| 159 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 | |
| 164 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 165 ResourceMark rm(THREAD); | |
| 166 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
| 167 return vt->index_of_miranda(name(), signature()); | |
| 168 } | |
| 169 | |
| 170 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 171 instanceKlass *ik = instanceKlass::cast(klass()); | |
| 172 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
| 173 } | |
| 174 | |
| 710 | 175 void LinkResolver::lookup_implicit_method(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
| 176 if (EnableMethodHandles && MethodHandles::enabled() && | |
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177 klass() == SystemDictionary::MethodHandle_klass() && |
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178 methodOopDesc::is_method_handle_invoke_name(name())) { |
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179 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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180 signature, |
| 710 | 181 Handle(), |
| 182 Handle(), | |
| 183 CHECK); | |
| 184 if (result_oop != NULL) { | |
| 185 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
| 186 result = methodHandle(THREAD, result_oop); | |
| 187 } | |
| 188 } | |
| 189 } | |
| 190 | |
| 0 | 191 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
| 192 KlassHandle resolved_klass, | |
| 193 KlassHandle sel_klass, | |
| 194 methodHandle sel_method, | |
| 195 TRAPS) { | |
| 196 | |
| 197 AccessFlags flags = sel_method->access_flags(); | |
| 198 | |
| 199 // Special case: arrays always override "clone". JVMS 2.15. | |
| 200 // If the resolved klass is an array class, and the declaring class | |
| 201 // is java.lang.Object and the method is "clone", set the flags | |
| 202 // to public. | |
| 203 // | |
| 204 // We'll check for the method name first, as that's most likely | |
| 205 // to be false (so we'll short-circuit out of these tests). | |
| 206 if (sel_method->name() == vmSymbols::clone_name() && | |
| 1142 | 207 sel_klass() == SystemDictionary::Object_klass() && |
| 0 | 208 resolved_klass->oop_is_array()) { |
| 209 // We need to change "protected" to "public". | |
| 210 assert(flags.is_protected(), "clone not protected?"); | |
| 211 jint new_flags = flags.as_int(); | |
| 212 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
| 213 new_flags = new_flags | JVM_ACC_PUBLIC; | |
| 214 flags.set_flags(new_flags); | |
| 215 } | |
| 216 | |
| 217 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 218 resolved_klass->as_klassOop(), | |
| 219 sel_klass->as_klassOop(), | |
| 220 flags, | |
| 221 true)) { | |
| 222 ResourceMark rm(THREAD); | |
| 223 Exceptions::fthrow( | |
| 224 THREAD_AND_LOCATION, | |
| 225 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 226 "tried to access method %s.%s%s from class %s", | |
| 227 sel_klass->external_name(), | |
| 228 sel_method->name()->as_C_string(), | |
| 229 sel_method->signature()->as_C_string(), | |
| 230 ref_klass->external_name() | |
| 231 ); | |
| 232 return; | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
| 237 constantPoolHandle pool, int index, TRAPS) { | |
| 238 | |
| 239 // resolve klass | |
| 240 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 241 | |
| 242 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
| 243 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
| 244 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
| 245 | |
| 246 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 247 } | |
| 248 | |
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249 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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250 // The class is java.dyn.MethodHandle |
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251 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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252 |
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253 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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254 |
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255 symbolHandle method_signature(THREAD, pool->signature_ref_at(index)); |
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256 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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257 |
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258 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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259 } |
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260 |
| 0 | 261 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
| 262 | |
| 263 // resolve klass | |
| 264 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 265 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
| 266 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
| 267 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
| 268 | |
| 269 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 270 } | |
| 271 | |
| 272 | |
| 273 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 274 symbolHandle method_name, symbolHandle method_signature, | |
| 275 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 276 | |
| 277 // 1. check if klass is not interface | |
| 278 if (resolved_klass->is_interface()) { | |
| 279 char buf[200]; | |
| 280 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
| 281 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 282 } | |
| 283 | |
| 284 // 2. lookup method in resolved klass and its super klasses | |
| 285 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 286 | |
| 287 if (resolved_method.is_null()) { // not found in the class hierarchy | |
| 288 // 3. lookup method in all the interfaces implemented by the resolved klass | |
| 289 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 290 | |
| 291 if (resolved_method.is_null()) { | |
| 710 | 292 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
| 293 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 294 } | |
| 295 | |
| 296 if (resolved_method.is_null()) { | |
| 0 | 297 // 4. method lookup failed |
| 298 ResourceMark rm(THREAD); | |
| 299 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 300 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 301 method_name(), | |
| 302 method_signature())); | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 // 5. check if method is concrete | |
| 307 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
| 308 ResourceMark rm(THREAD); | |
| 309 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 310 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 311 method_name(), | |
| 312 method_signature())); | |
| 313 } | |
| 314 | |
| 315 // 6. access checks, access checking may be turned off when calling from within the VM. | |
| 316 if (check_access) { | |
| 317 assert(current_klass.not_null() , "current_klass should not be null"); | |
| 318 | |
| 319 // check if method can be accessed by the referring class | |
| 320 check_method_accessability(current_klass, | |
| 321 resolved_klass, | |
| 322 KlassHandle(THREAD, resolved_method->method_holder()), | |
| 323 resolved_method, | |
| 324 CHECK); | |
| 325 | |
| 326 // check loader constraints | |
| 327 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 328 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 329 { | |
| 330 ResourceMark rm(THREAD); | |
| 331 char* failed_type_name = | |
| 332 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 333 class_loader, true, CHECK); | |
| 334 if (failed_type_name != NULL) { | |
| 335 const char* msg = "loader constraint violation: when resolving method" | |
| 336 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
| 337 " and the class loader (instance of %s) for resolved class, %s, have" | |
| 338 " different Class objects for the type %s used in the signature"; | |
| 339 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
| 340 const char* loader1 = SystemDictionary::loader_name(loader()); | |
| 341 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 342 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 343 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 344 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 345 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 346 strlen(failed_type_name); | |
| 347 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 348 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 349 resolved, failed_type_name); | |
| 350 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 351 } | |
| 352 } | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
| 357 KlassHandle resolved_klass, | |
| 358 symbolHandle method_name, | |
| 359 symbolHandle method_signature, | |
| 360 KlassHandle current_klass, | |
| 361 bool check_access, TRAPS) { | |
| 362 | |
| 363 // check if klass is interface | |
| 364 if (!resolved_klass->is_interface()) { | |
| 365 char buf[200]; | |
| 366 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
| 367 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 368 } | |
| 369 | |
| 370 // lookup method in this interface or its super, java.lang.Object | |
| 371 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 372 | |
| 373 if (resolved_method.is_null()) { | |
| 374 // lookup method in all the super-interfaces | |
| 375 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 376 if (resolved_method.is_null()) { | |
| 377 // no method found | |
| 378 ResourceMark rm(THREAD); | |
| 379 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 380 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 381 method_name(), | |
| 382 method_signature())); | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 if (check_access) { | |
| 387 HandleMark hm(THREAD); | |
| 388 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 389 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 390 { | |
| 391 ResourceMark rm(THREAD); | |
| 392 char* failed_type_name = | |
| 393 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 394 class_loader, true, CHECK); | |
| 395 if (failed_type_name != NULL) { | |
| 396 const char* msg = "loader constraint violation: when resolving " | |
| 397 "interface method \"%s\" the class loader (instance of %s) of the " | |
| 398 "current class, %s, and the class loader (instance of %s) for " | |
| 399 "resolved class, %s, have different Class objects for the type %s " | |
| 400 "used in the signature"; | |
| 401 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
| 402 const char* loader1 = SystemDictionary::loader_name(loader()); | |
| 403 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 404 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 405 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 406 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 407 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 408 strlen(failed_type_name); | |
| 409 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 410 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 411 resolved, failed_type_name); | |
| 412 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 413 } | |
| 414 } | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 //------------------------------------------------------------------------------------------------------------------------ | |
| 419 // Field resolution | |
| 420 | |
| 421 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
| 422 KlassHandle resolved_klass, | |
| 423 KlassHandle sel_klass, | |
| 424 fieldDescriptor& fd, | |
| 425 TRAPS) { | |
| 426 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 427 resolved_klass->as_klassOop(), | |
| 428 sel_klass->as_klassOop(), | |
| 429 fd.access_flags(), | |
| 430 true)) { | |
| 431 ResourceMark rm(THREAD); | |
| 432 Exceptions::fthrow( | |
| 433 THREAD_AND_LOCATION, | |
| 434 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 435 "tried to access field %s.%s from class %s", | |
| 436 sel_klass->external_name(), | |
| 437 fd.name()->as_C_string(), | |
| 438 ref_klass->external_name() | |
| 439 ); | |
| 440 return; | |
| 441 } | |
| 442 } | |
| 443 | |
| 444 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
| 445 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
| 446 } | |
| 447 | |
| 448 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
| 449 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
| 450 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
| 451 | |
| 452 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
| 453 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
| 454 | |
| 455 // resolve specified klass | |
| 456 KlassHandle resolved_klass; | |
| 457 if (update_pool) { | |
| 458 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 459 } else { | |
| 460 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
| 461 } | |
| 462 // Load these early in case the resolve of the containing klass fails | |
| 463 symbolOop field = pool->name_ref_at(index); | |
| 464 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
| 465 symbolOop sig = pool->signature_ref_at(index); | |
| 466 // Check if there's a resolved klass containing the field | |
| 467 if( resolved_klass.is_null() ) { | |
| 468 ResourceMark rm(THREAD); | |
| 469 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 470 } | |
| 471 | |
| 472 // Resolve instance field | |
| 473 fieldDescriptor fd; // find_field initializes fd if found | |
| 474 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
| 475 // check if field exists; i.e., if a klass containing the field def has been selected | |
| 476 if (sel_klass.is_null()){ | |
| 477 ResourceMark rm(THREAD); | |
| 478 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 479 } | |
| 480 | |
| 481 // check access | |
| 482 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
| 483 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
| 484 | |
| 485 // check for errors | |
| 486 if (is_static != fd.is_static()) { | |
| 487 char msg[200]; | |
| 488 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string()); | |
| 489 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
| 490 } | |
| 491 | |
| 492 // Final fields can only be accessed from its own class. | |
| 493 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
| 494 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
| 495 } | |
| 496 | |
| 497 // initialize resolved_klass if necessary | |
| 498 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
| 499 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
| 500 // | |
| 501 // note 2: we don't want to force initialization if we are just checking | |
| 502 // if the field access is legal; e.g., during compilation | |
| 503 if (is_static && !check_only) { | |
| 504 sel_klass->initialize(CHECK); | |
| 505 } | |
| 506 | |
| 507 { | |
| 508 HandleMark hm(THREAD); | |
| 509 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
| 510 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
| 511 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
| 512 { | |
| 513 ResourceMark rm(THREAD); | |
| 514 char* failed_type_name = | |
| 515 SystemDictionary::check_signature_loaders(signature_ref, | |
| 516 ref_loader, sel_loader, | |
| 517 false, | |
| 518 CHECK); | |
| 519 if (failed_type_name != NULL) { | |
| 520 const char* msg = "loader constraint violation: when resolving field" | |
| 521 " \"%s\" the class loader (instance of %s) of the referring class, " | |
| 522 "%s, and the class loader (instance of %s) for the field's resolved " | |
| 523 "type, %s, have different Class objects for that type"; | |
| 524 char* field_name = field_h()->as_C_string(); | |
| 525 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
| 526 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
| 527 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
| 528 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
| 529 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
| 530 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 531 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
| 532 failed_type_name); | |
| 533 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 534 } | |
| 535 } | |
| 536 } | |
| 537 | |
| 538 // return information. note that the klass is set to the actual klass containing the | |
| 539 // field, otherwise access of static fields in superclasses will not work. | |
| 540 KlassHandle holder (THREAD, fd.field_holder()); | |
| 541 symbolHandle name (THREAD, fd.name()); | |
| 542 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
| 543 } | |
| 544 | |
| 545 | |
| 546 //------------------------------------------------------------------------------------------------------------------------ | |
| 547 // Invoke resolution | |
| 548 // | |
| 549 // Naming conventions: | |
| 550 // | |
| 551 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
| 552 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
| 553 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
| 554 // recv_klass the receiver klass | |
| 555 | |
| 556 | |
| 557 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
| 558 symbolHandle method_signature, KlassHandle current_klass, | |
| 559 bool check_access, bool initialize_class, TRAPS) { | |
| 560 methodHandle resolved_method; | |
| 561 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 562 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
| 563 | |
| 564 // Initialize klass (this should only happen if everything is ok) | |
| 565 if (initialize_class && resolved_klass->should_be_initialized()) { | |
| 566 resolved_klass->initialize(CHECK); | |
| 567 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 568 } | |
| 569 | |
| 570 // setup result | |
| 571 result.set_static(resolved_klass, resolved_method, CHECK); | |
| 572 } | |
| 573 | |
| 574 // throws linktime exceptions | |
| 575 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 576 symbolHandle method_name, symbolHandle method_signature, | |
| 577 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 578 | |
| 579 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 580 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
| 581 | |
| 582 // check if static | |
| 583 if (!resolved_method->is_static()) { | |
| 584 char buf[200]; | |
| 585 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 586 resolved_method->name(), | |
| 587 resolved_method->signature())); | |
| 588 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 589 } | |
| 590 } | |
| 591 | |
| 592 | |
| 593 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
| 594 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
| 595 methodHandle resolved_method; | |
| 596 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 597 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
| 598 } | |
| 599 | |
| 600 // throws linktime exceptions | |
| 601 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 602 symbolHandle method_name, symbolHandle method_signature, | |
| 603 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 604 | |
| 605 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 606 | |
| 607 // check if method name is <init>, that it is found in same klass as static type | |
| 608 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
| 609 resolved_method->method_holder() != resolved_klass()) { | |
| 610 ResourceMark rm(THREAD); | |
| 611 Exceptions::fthrow( | |
| 612 THREAD_AND_LOCATION, | |
| 613 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
| 614 "%s: method %s%s not found", | |
| 615 resolved_klass->external_name(), | |
| 616 resolved_method->name()->as_C_string(), | |
| 617 resolved_method->signature()->as_C_string() | |
| 618 ); | |
| 619 return; | |
| 620 } | |
| 621 | |
| 622 // check if not static | |
| 623 if (resolved_method->is_static()) { | |
| 624 char buf[200]; | |
| 625 jio_snprintf(buf, sizeof(buf), | |
| 626 "Expecting non-static method %s", | |
| 627 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 628 resolved_method->name(), | |
| 629 resolved_method->signature())); | |
| 630 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 631 } | |
| 632 } | |
| 633 | |
| 634 // throws runtime exceptions | |
| 635 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 636 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 637 | |
| 638 // resolved method is selected method unless we have an old-style lookup | |
| 639 methodHandle sel_method(THREAD, resolved_method()); | |
| 640 | |
| 641 // check if this is an old-style super call and do a new lookup if so | |
| 642 { KlassHandle method_klass = KlassHandle(THREAD, | |
| 643 resolved_method->method_holder()); | |
| 644 | |
| 645 if (check_access && | |
| 646 // a) check if ACC_SUPER flag is set for the current class | |
| 647 current_klass->is_super() && | |
| 648 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
| 649 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
| 650 // c) check if the method is not <init> | |
| 651 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
| 652 // Lookup super method | |
| 653 KlassHandle super_klass(THREAD, current_klass->super()); | |
| 654 lookup_instance_method_in_klasses(sel_method, super_klass, | |
| 655 symbolHandle(THREAD, resolved_method->name()), | |
| 656 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 657 // check if found | |
| 658 if (sel_method.is_null()) { | |
| 659 ResourceMark rm(THREAD); | |
| 660 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 661 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 662 resolved_method->name(), | |
| 663 resolved_method->signature())); | |
| 664 } | |
| 665 } | |
| 666 } | |
| 667 | |
| 668 // check if not static | |
| 669 if (sel_method->is_static()) { | |
| 670 char buf[200]; | |
| 671 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 672 resolved_method->name(), | |
| 673 resolved_method->signature())); | |
| 674 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 675 } | |
| 676 | |
| 677 // check if abstract | |
| 678 if (sel_method->is_abstract()) { | |
| 679 ResourceMark rm(THREAD); | |
| 680 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 681 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 682 sel_method->name(), | |
| 683 sel_method->signature())); | |
| 684 } | |
| 685 | |
| 686 // setup result | |
| 687 result.set_static(resolved_klass, sel_method, CHECK); | |
| 688 } | |
| 689 | |
| 690 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
| 691 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
| 692 bool check_access, bool check_null_and_abstract, TRAPS) { | |
| 693 methodHandle resolved_method; | |
| 694 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 695 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
| 696 } | |
| 697 | |
| 698 // throws linktime exceptions | |
| 699 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
| 700 symbolHandle method_name, symbolHandle method_signature, | |
| 701 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 702 // normal method resolution | |
| 703 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 704 | |
| 705 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 706 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 707 | |
| 708 // check if not static | |
| 709 if (resolved_method->is_static()) { | |
| 710 char buf[200]; | |
| 711 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 712 resolved_method->name(), | |
| 713 resolved_method->signature())); | |
| 714 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 // throws runtime exceptions | |
| 719 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
| 720 methodHandle resolved_method, | |
| 721 KlassHandle resolved_klass, | |
| 722 Handle recv, | |
| 723 KlassHandle recv_klass, | |
| 724 bool check_null_and_abstract, | |
| 725 TRAPS) { | |
| 726 | |
| 727 // setup default return values | |
| 728 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 729 methodHandle selected_method; | |
| 730 | |
| 731 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
| 732 | |
| 733 // runtime method resolution | |
| 734 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
| 735 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 736 } | |
| 737 | |
| 738 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 739 // has not been rewritten, and the vtable initialized. | |
| 740 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 741 | |
| 742 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 743 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
| 744 // a missing receiver might result in a bogus lookup. | |
| 745 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 746 | |
| 747 // do lookup based on receiver klass using the vtable index | |
| 748 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
| 749 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
| 750 symbolHandle(THREAD, resolved_method->name()), | |
| 751 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 752 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
| 753 | |
| 754 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
| 755 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 756 } else { | |
| 757 // at this point we are sure that resolved_method is virtual and not | |
| 758 // a miranda method; therefore, it must have a valid vtable index. | |
| 759 vtable_index = resolved_method->vtable_index(); | |
| 760 // We could get a negative vtable_index for final methods, | |
| 761 // because as an optimization they are they are never put in the vtable, | |
| 762 // unless they override an existing method. | |
| 763 // If we do get a negative, it means the resolved method is the the selected | |
| 764 // method, and it can never be changed by an override. | |
| 765 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
| 766 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
| 767 selected_method = resolved_method; | |
| 768 } else { | |
| 769 // recv_klass might be an arrayKlassOop but all vtables start at | |
| 770 // the same place. The cast is to avoid virtual call and assertion. | |
| 771 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
| 772 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 773 } | |
| 774 } | |
| 775 | |
| 776 // check if method exists | |
| 777 if (selected_method.is_null()) { | |
| 778 ResourceMark rm(THREAD); | |
| 779 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 780 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 781 resolved_method->name(), | |
| 782 resolved_method->signature())); | |
| 783 } | |
| 784 | |
| 785 // check if abstract | |
| 786 if (check_null_and_abstract && selected_method->is_abstract()) { | |
| 787 ResourceMark rm(THREAD); | |
| 788 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 789 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 790 selected_method->name(), | |
| 791 selected_method->signature())); | |
| 792 } | |
| 793 | |
| 794 // setup result | |
| 795 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 796 } | |
| 797 | |
| 798 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
| 799 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
| 800 bool check_access, bool check_null_and_abstract, TRAPS) { | |
| 801 methodHandle resolved_method; | |
| 802 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 803 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
| 804 } | |
| 805 | |
| 806 // throws linktime exceptions | |
| 807 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
| 808 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
| 809 // normal interface method resolution | |
| 810 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 811 | |
| 812 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 813 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 814 } | |
| 815 | |
| 816 // throws runtime exceptions | |
| 817 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 818 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
| 819 // check if receiver exists | |
| 820 if (check_null_and_abstract && recv.is_null()) { | |
| 821 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 822 } | |
| 823 | |
| 824 // check if receiver klass implements the resolved interface | |
| 825 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
| 826 char buf[200]; | |
| 827 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
| 828 (Klass::cast(recv_klass()))->external_name(), | |
| 829 (Klass::cast(resolved_klass()))->external_name()); | |
| 830 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 831 } | |
| 832 // do lookup based on receiver klass | |
| 833 methodHandle sel_method; | |
| 834 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
| 835 symbolHandle(THREAD, resolved_method->name()), | |
| 836 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 837 // check if method exists | |
| 838 if (sel_method.is_null()) { | |
| 839 ResourceMark rm(THREAD); | |
| 840 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 841 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 842 resolved_method->name(), | |
| 843 resolved_method->signature())); | |
| 844 } | |
| 845 // check if public | |
| 846 if (!sel_method->is_public()) { | |
| 847 ResourceMark rm(THREAD); | |
| 848 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
| 849 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 850 sel_method->name(), | |
| 851 sel_method->signature())); | |
| 852 } | |
| 853 // check if abstract | |
| 854 if (check_null_and_abstract && sel_method->is_abstract()) { | |
| 855 ResourceMark rm(THREAD); | |
| 856 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 857 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 858 sel_method->name(), | |
| 859 sel_method->signature())); | |
| 860 } | |
| 861 // setup result | |
| 862 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
| 863 } | |
| 864 | |
| 865 | |
| 866 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
| 867 KlassHandle resolved_klass, | |
| 868 symbolHandle method_name, | |
| 869 symbolHandle method_signature, | |
| 870 KlassHandle current_klass, | |
| 871 bool check_access) { | |
| 872 EXCEPTION_MARK; | |
| 873 methodHandle method_result; | |
| 874 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 875 if (HAS_PENDING_EXCEPTION) { | |
| 876 CLEAR_PENDING_EXCEPTION; | |
| 877 return methodHandle(); | |
| 878 } else { | |
| 879 return method_result; | |
| 880 } | |
| 881 } | |
| 882 | |
| 883 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
| 884 KlassHandle resolved_klass, | |
| 885 symbolHandle method_name, | |
| 886 symbolHandle method_signature, | |
| 887 KlassHandle current_klass, | |
| 888 bool check_access) { | |
| 889 EXCEPTION_MARK; | |
| 890 methodHandle method_result; | |
| 891 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 892 if (HAS_PENDING_EXCEPTION) { | |
| 893 CLEAR_PENDING_EXCEPTION; | |
| 894 return methodHandle(); | |
| 895 } else { | |
| 896 return method_result; | |
| 897 } | |
| 898 } | |
| 899 | |
| 900 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
| 901 KlassHandle receiver_klass, | |
| 902 KlassHandle resolved_klass, | |
| 903 symbolHandle name, | |
| 904 symbolHandle signature, | |
| 905 KlassHandle current_klass) { | |
| 906 EXCEPTION_MARK; | |
| 907 CallInfo info; | |
| 908 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 909 if (HAS_PENDING_EXCEPTION) { | |
| 910 CLEAR_PENDING_EXCEPTION; | |
| 911 return methodHandle(); | |
| 912 } | |
| 913 return info.selected_method(); | |
| 914 } | |
| 915 | |
| 916 methodHandle LinkResolver::resolve_interface_call_or_null( | |
| 917 KlassHandle receiver_klass, | |
| 918 KlassHandle resolved_klass, | |
| 919 symbolHandle name, | |
| 920 symbolHandle signature, | |
| 921 KlassHandle current_klass) { | |
| 922 EXCEPTION_MARK; | |
| 923 CallInfo info; | |
| 924 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 925 if (HAS_PENDING_EXCEPTION) { | |
| 926 CLEAR_PENDING_EXCEPTION; | |
| 927 return methodHandle(); | |
| 928 } | |
| 929 return info.selected_method(); | |
| 930 } | |
| 931 | |
| 932 int LinkResolver::resolve_virtual_vtable_index( | |
| 933 KlassHandle receiver_klass, | |
| 934 KlassHandle resolved_klass, | |
| 935 symbolHandle name, | |
| 936 symbolHandle signature, | |
| 937 KlassHandle current_klass) { | |
| 938 EXCEPTION_MARK; | |
| 939 CallInfo info; | |
| 940 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 941 if (HAS_PENDING_EXCEPTION) { | |
| 942 CLEAR_PENDING_EXCEPTION; | |
| 943 return methodOopDesc::invalid_vtable_index; | |
| 944 } | |
| 945 return info.vtable_index(); | |
| 946 } | |
| 947 | |
| 948 methodHandle LinkResolver::resolve_static_call_or_null( | |
| 949 KlassHandle resolved_klass, | |
| 950 symbolHandle name, | |
| 951 symbolHandle signature, | |
| 952 KlassHandle current_klass) { | |
| 953 EXCEPTION_MARK; | |
| 954 CallInfo info; | |
| 955 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 956 if (HAS_PENDING_EXCEPTION) { | |
| 957 CLEAR_PENDING_EXCEPTION; | |
| 958 return methodHandle(); | |
| 959 } | |
| 960 return info.selected_method(); | |
| 961 } | |
| 962 | |
| 963 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
| 964 KlassHandle current_klass) { | |
| 965 EXCEPTION_MARK; | |
| 966 CallInfo info; | |
| 967 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
| 968 if (HAS_PENDING_EXCEPTION) { | |
| 969 CLEAR_PENDING_EXCEPTION; | |
| 970 return methodHandle(); | |
| 971 } | |
| 972 return info.selected_method(); | |
| 973 } | |
| 974 | |
| 975 | |
| 976 | |
| 977 //------------------------------------------------------------------------------------------------------------------------ | |
| 978 // ConstantPool entries | |
| 979 | |
| 980 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
| 981 switch (byte) { | |
| 982 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
| 983 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
| 984 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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985 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
| 0 | 986 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
| 987 } | |
| 988 return; | |
| 989 } | |
| 990 | |
| 991 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
| 992 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
| 993 // resolve klass | |
| 994 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 995 | |
| 996 // Get name, signature, and static klass | |
| 997 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
| 998 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
| 999 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
| 1000 } | |
| 1001 | |
| 1002 | |
| 1003 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1004 KlassHandle resolved_klass; | |
| 1005 symbolHandle method_name; | |
| 1006 symbolHandle method_signature; | |
| 1007 KlassHandle current_klass; | |
| 1008 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1009 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1010 } | |
| 1011 | |
| 1012 | |
| 1013 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1014 KlassHandle resolved_klass; | |
| 1015 symbolHandle method_name; | |
| 1016 symbolHandle method_signature; | |
| 1017 KlassHandle current_klass; | |
| 1018 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1019 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 1020 } | |
| 1021 | |
| 1022 | |
| 1023 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
| 1024 constantPoolHandle pool, int index, | |
| 1025 TRAPS) { | |
| 1026 | |
| 1027 KlassHandle resolved_klass; | |
| 1028 symbolHandle method_name; | |
| 1029 symbolHandle method_signature; | |
| 1030 KlassHandle current_klass; | |
| 1031 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1032 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1033 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1034 } | |
| 1035 | |
| 1036 | |
| 1037 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
| 1038 KlassHandle resolved_klass; | |
| 1039 symbolHandle method_name; | |
| 1040 symbolHandle method_signature; | |
| 1041 KlassHandle current_klass; | |
| 1042 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1043 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1044 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1045 } | |
| 1046 | |
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1047 |
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1048 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1049 assert(EnableInvokeDynamic, ""); |
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1050 |
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1051 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1052 |
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1053 // At this point, we only need the signature, and can ignore the name. |
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1059
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1054 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly |
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1055 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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1056 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1057 |
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1058 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1059 // The extra MH receiver will be inserted into the stack on every call. |
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1060 methodHandle resolved_method; |
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1061 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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1062 if (resolved_method.is_null()) { |
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1063 THROW(vmSymbols::java_lang_InternalError()); |
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1064 } |
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1065 result.set_virtual(resolved_klass, KlassHandle(), resolved_method, resolved_method, resolved_method->vtable_index(), CHECK); |
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1066 } |
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1067 |
| 0 | 1068 //------------------------------------------------------------------------------------------------------------------------ |
| 1069 #ifndef PRODUCT | |
| 1070 | |
| 1071 void FieldAccessInfo::print() { | |
| 1072 ResourceMark rm; | |
| 1073 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
| 1074 } | |
| 1075 | |
| 1076 #endif |